U.N. Force Starts Congo Sweep

KAMPALA, Uganda—The United Nations in Congo arrested more than 40 rebels in recent days and recovered scores of firearms, in a crackdown aimed at enforcing a security zone around the flashpoint city of Goma, officials said Monday.

The U.N. peacekeeping mission, known as Monusco, started enforcing a security zone of some 30 square kilometers (about 12 square miles) around the mineral trading city of Goma late last week, according to...